Improvement of Seismic Damage Prediction Method for Urban Buildings
JIANG Hui
TAN Xiao
WANG Lixin
DONG Wei
Abstract：The present seismic damage prediction method of predicting damages of buildings is based on one-degree-interval intensity zone. This method results in quite different damages predicted for buildings with same seismic capacity but closely located in two sides of the intensity isocline, while the damages predicted for all buildings within the same intensity zone, no matter close to the higher intensity isocline or the lower intensity isocline, are identical under a certain scenario earthquake. This kind of results predicted is quite different from actual seismic damage.To sol ve this problem, the authors subdivide one-degree-interval intensity zone by 0.2 degree interval, and break down the damage index and damage level into five smaller grades accordingly at the same time. Based on the relationship between seismic intensity and damage index, the authors use fitting and equal division methods respectively to get adjustment coefficient of damage index or graded damage index for five subdivided intensity grades. The adjustment coefficient of damage index obtained by fitting method is suitable for seismic damage prediction of building groups, and the damage index obtained by equal division method is applicable to single building. This improved method for damage prediction can not only reflect the discrepancy among buildings located in different subsections of the same intensity zone, but also make sure that the predicted damages of buildings with same seismic capacity and from two sides of anintensity isocline not fluctuate sharply.
Keywords：Seismic damage prediction methodSeismic intensityDamage indexAdjustment coefficient
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 1-10 )